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(A) Condensation polymers are formed by the repeated condensation reaction between two different bi-functional or tri-functional monomeric units,usual

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$4$

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(A) Condensation polymers are formed by the repeated condensation reaction between two different bi-functional or tri-functional monomeric units,usually with the elimination of small molecules like water,alcohol,etc.$1$. Bakelite: Formed by the condensation of phenol and formaldehyde. It is a condensation polymer.$2$. Teflon: Formed by the addition polymerization of tetrafluoroethylene. It is an addition polymer.$3$. Nylon-$6$: Formed by the ring-opening polymerization of caprolactam,which involves the elimination of water during the synthesis of the monomer or the process itself. It is classified as a condensation polymer.$4$. Dacron (Terylene): Formed by the condensation reaction between ethylene glycol and terephthalic acid. It is a condensation polymer.$5$. Polyisoprene: Formed by the addition polymerization of isoprene. It is an addition polymer.$6$. Melamine: Formed by the condensation polymerization of melamine and formaldehyde. It is a condensation polymer.$7$. Neoprene: Formed by the addition polymerization of chloroprene. It is an addition polymer.The condensation polymers are: Bakelite,Nylon-$6$,Dacron,and Melamine.Total count = $4$.

How many of the following polymers come under the category of condensation polymers? Bakelite,Teflon,Nylon-$6$,Dacron,Polyisoprene,Melamine,Neoprene

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